Metallic pollution in clogging materials of urban porous pavements

1995 ◽  
Vol 32 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Valérie Colandini ◽  
Michel Legret ◽  
Yves Brosseaud ◽  
Jean-Daniel Baladès
Keyword(s):  
Heavy Metal ◽  
Particle Size ◽  
Road Traffic ◽  
Total Concentration ◽  
Extraction Procedure ◽  
Interaction Strength ◽  
Metal Mobility ◽  
Residual Fraction ◽  
Metal Contents ◽  
Copper Zinc

Porous pavements infiltrated with stormwater are faced with clogging problems: runoff particles seep and clog the pervious surface layer of these structures. Clogging material samples (in the form of sludge) have been collected in cleaning operations on the pervious asphalt. This study aims at characterizing these materials, particle size distribution, heavy metal contents by particle size, and studying interactions between metals and particles. A sequential extraction procedure proposed by the experts of the Community Bureau of Reference (B.C.R.) was applied to provide information about heavy metal distribution on particles and to evaluate interaction strength, and consequently potential metal mobility when chemical variations occurred in the environment. Mainly made up of sand, the materials are polluted with lead, copper, zinc and cadmium. The concentrations appeared to be linked with road traffic intensity. The heavy metal contents by particle size showed that the finer are the particles, the higher are the heavy metal concentrations. Heavy metals were found potentially labile; metals contents in the residual fraction (mineral fraction) represented less than 20 % of the total concentration. Cadmium and zinc were apparently more labile than lead and copper.

scholarly journals Distribution and Fractionation of Heavy Metals in Sediments of Karra River, Hetauda, Nepal

2015 ◽  
Vol 19 (2) ◽  
pp. 123-128 ◽  
Author(s):  
Sadhana Pradhanang
Keyword(s):  
River Sediment ◽  
Total Concentration ◽  
Extraction Procedure ◽  
Residual Fraction ◽  
High Concentration ◽  
Metal Concentrations ◽  
Mn Oxide ◽  
Fractionation Analysis ◽  
Polluted Sites

A five-step sequential extraction procedure was applied for the determination of the distribution of four elements (Cr, Mn, Fe, and Ni) in sediment of the Karra River. Sediment samples were collected from 16 different sites in the Karra River (upstream, industrial belt, downstream). The distribution of trace metals among exchangeable, carbonate, reducible, oxidizable and residual fractions were determined. The total concentration of metals varies in the range of Cr 72–4339.54 mg kg?1, Mn 22–411.93 mg kg?1, Fe 2967.23-32423.0 mg kg?1 and Ni 31.70-180.74 mg kg?1. The accuracy evaluated by comparing total trace metal concentrations with the sum of the five individual fractions proved to be satisfactory. The chemical speciation of Cr, Mn, Fe, and Ni in most sampling stations were in the order of residual > reducible > oxidazable > carbonate> exchangeable. Fractionation analysis showed that dominant metals are in residual fraction. The highest metal concentrations were observed at the most polluted sites of the industrial belt. High concentration of chromium was found in the Fe-Mn oxide and organic fraction in some of the sites of industrial belt.Journal of Institute of Science and Technology, 2014, 19(2): 123-128

scholarly journals Mobility of lead, zinc and cadmium in alluvial soils heavily polluted by smelting industry

2011 ◽  
Vol 51 (No, 7) ◽  
pp. 316-321 ◽  
Author(s):  
A. Vaněk ◽  
L. Borůvka ◽  
O. Drábek ◽  
M. Mihaljevič ◽  
M. Komárek
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Czech Republic ◽  
Extraction Procedure ◽  
Metal Mobility ◽  
Alluvial Soils ◽  
Mobility Factor ◽  
Heavy Metal Mobility ◽  
Profile Distribution ◽  
Lead Zinc

In order to determine the mobility of Pb, Zn and Cd in soils from the Př&iacute;bram region (Czech Republic) heavily contaminated by metallurgy, two profiles of alluvial soils were closely studied. Total contents of heavy metals were determined after digestion with a mixture of HF and HClO<sub>4</sub>. Heavy metal mobility was assessed using the mobility factor (MF) that represents the proportion of heavy metals present in the exchangeable and carbonate bound fraction based on the Tessier&rsquo;s sequential extraction procedure. The MF ranged from 2 to 46% for lead, 19 to 62% for zinc and 61 to 94% for cadmium. The profile distribution of zinc and cadmium showed a variable development with depth, which is caused by high amounts of these metals present in labile forms. The profile distribution of lead (the least mobile metal) is characterized by a gradual decrease with depth. The results indicate a higher contamination of the soil profile situated 2.5 km away from the smelter in comparison with the profile in its close vicinity. This fact confirms the existence of extreme fluvial contamination.

scholarly journals Soil Heavy Metal Pollution Around Iron Tailing Areas at Different Using Status

2015 ◽  
Vol 9 (1) ◽  
pp. 113-120
Author(s):  
Fengmin Song ◽  
Xingchang Zhang ◽  
Yanmin Wang ◽  
Chen Li
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Total Concentration ◽  
Potential Ecological Risk ◽  
Residual Fraction ◽  
Large Spatial Scale ◽  
Background Value ◽  
Local Soil

Heavy metal pollution was a dynamic changing process for a long period and on large spatial scale. The heavy metal content in tailing soil varied with time changing. The distribution and cumulative characteristics of heavy metals in different time and surrounding soil caused by ore dressing and smelting activities were different. The aim of this study was to assess the geochemical characteristics and pollution status of heavy metals in soil around 2 iron tailing areas at different using status. Samples were collected around the 2 different iron tailing and sieved through nylon sieves. Metals were measured in digested solutions by a atomic emission spectrometer. The concentration of all heavy metals (Fe, Mn, V, Cu, Ni) in the soil around using M tailing area exceeded local soil background value; however, the content of all metals except Fe in soil around closed W tailing areas were lower than background value. BCR results showed that average exchangeable fraction of Mn in soil around W and M accounted for 11.87%, 11.78% of the total concentration, respectively; average exchangeable and reducible fractions of Ni accounted for 26.97% and 13.59%, respectively; average oxidizable fraction of Cu accounted for 18.6%, 31.63% in soil around W and M, respectively, which were higher than other metals; residual fraction of Fe, V accounted for more than 80% of the total concentration. The results indicate the soil was moderately contaminated by heavy metal around M and unpolluted around W. However, the risk assessment results performed that Mn showed moderate potential ecological risk and other metals showed low potential risk.

scholarly journals Metal Speciation in Sediment from Muara Angke, Jakarta Bay Using of BCR Sequential Extraction Procedure

2019 ◽  
Vol 24 (1) ◽  
pp. 23
Author(s):  
Lestari Lestari ◽  
Fitri Budiyanto
Keyword(s):  
Heavy Metals ◽  
Sequential Extraction ◽  
Metal Speciation ◽  
Total Concentration ◽  
Extraction Procedure ◽  
Low Risk ◽  
Sequential Extraction Procedure ◽  
Residual Fraction ◽  
Risk Category ◽  
Bcr Sequential Extraction

The assessment of the biological availability of metals is rarely used only by knowing the total concentration of the metal. Therefore, six sediment samples from Muara Angke, Teluk Jakarta were assessed the chemical speciation of heavy metals. This study aims to determine metal speciation using the BCR sequential extraction procedure and to determine metal speciation to evaluate bioavailability in the sediments of Muara Angke, Jakarta Bay. In sediment from Muara Angke, the ability to move sequence of heavy metals studied was Pb>Zn>Cu>Ni. The mostly accumulated in the non-residual fraction of the total concentrations are Cu, Ni, Pb and Zn which indicated that the mobility and anthropogenic inputs of these metals in Muara Angke were quite high. The Risk Assessment Code (RAC) reveal that Zn and Ni at almost station exist in exchangeable and a fraction of carbonate-bound and therefore high-risk category. Most of the Cu at most of the station is in the oxidizable fraction, except a small portion found at all station is in the exchangeable fraction and fraction of carbonate-bound thus posing a low risk for the waters environment. The patterns of Pb speciation show no to low risk to the waters environment. However, metal observations in the waters are necessary because they are persistent and can accumulate which threatening the water environment.

scholarly journals Determination of the Heavy Metal Contents and the Benefit/Cost Analysis of Hypericum salsugineum in the Vicinity of Salt Lake

2021 ◽  
Vol 50 (12) ◽  
pp. 3493-3503
Author(s):  
Aynur Demir ◽  
Gökçen Baysal Furtana ◽  
Mehtap Tekşen ◽  
Rukiye Tipirdamaz
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Salt Lake ◽  
Benefit Cost Analysis ◽  
Metal Contents ◽  
Copper Zinc ◽  
Useful Life ◽  
Benefit Cost ◽  
Potential Use

In this study, Hypericum salsugineum, an endemic halophytic plant growing around Salt Lake, was analyzed to determine the heavy metals (chromium, lead, copper, zinc and nickel) on it and on the soil it grew. The phytoremediation potential of H. salsugineum was evaluated. In addition, the benefit cost (B/C) analysis was performed for its potential use in phytoremediation. The plant and soil samples were collected from Eskil and Cihanbeyli between May and September in 2016. A total of 300 soil and plant samples were analysed for heavy metal content. Statistical and standard benefit/cost analyses were performed for assessment. The capacity of accumulating the aforementioned heavy metals was found to be high in H. salsugineum. It was found that Ni and Pb ratio exceeded optimum values in its habitat, and H. salsugineum accumulated available Ni and Pb. When the plant was evaluated in terms of benefit/cost, B/C ratio was greater than 1 during the useful life of the study. This conclusion increases the ecological and economical values of H. Salsugineum, effecting its potential use in phytoremediation.

scholarly journals Quantification and Speciation of Lead, Cadmium and Chromium in Dandora Dumpsite Soils

2020 ◽  
pp. 9-15
Author(s):  
P. M. Kahara ◽  
J. Murungi ◽  
J. K. Kiptoo ◽  
G. Nyaga
Keyword(s):  
Heavy Metals ◽  
Soil Profile ◽  
Total Concentration ◽  
Extraction Procedure ◽  
Total Content ◽  
Residual Fraction ◽  
Soil Profiles ◽  
Bcr Sequential Extraction ◽  
Lead And Cadmium ◽  
Flame Atomic Absorption

Open dumpsites are one of the main sources of heavy metals and as a result, lots of research has been undertaken on the pseudo-total content of heavy metals in dumpsite soils, but little research on the forms in which they exist. The current research was carried out to determine levels of chromium, lead and cadmium in the various fractions of Dandora dumpsite soil and how they are fractionated in the topsoil and subsoil horizons. Samples were obtained from eight sites with depths of (0-30 cm) and (30-60 cm) for topsoil and bottom soils respectively. The modified Community Bureau of Reference (BCR) sequential extraction procedure was used and metal analysis performed using flame atomic absorption spectrophotometry. The metals (lead, chromium and cadmium) total concentration (µg/g) in the upper soil profile ranged from 42.22 to 1096.21, 38.26 to 180.60 and 11.23 to 44.22 while the lower soil profiles were 54.19 to 239.28, 30.56 to 76.48 and 9.47 to 22.56, respectively. The concentration of lead in various fractions of the upper soil profile followed the order; reducible > oxidisable > residual > exchangeable, while that of chromium was residual > oxidisable > reducible > exchangeable. Cadmium followed the order exchangeable > residual > reducible > oxidisable. The percentage of the metals in non-residual fraction were Pb (78%), Cr (58.7%) and Cd (70%). Their mobility factors were (Pb) 39.7 (Cr) 7.75 and (Cd) 5.02 in the upper soil profiles. Thus, the results suggest that Dandora dumpsite is highly polluted with the selected heavy metals.

The Effect of Sediment Grain Size on Heavy Metal Content in Different Depth in Water Reservoir Ruzin, Slovakia

2015 ◽  
Vol 244 ◽  
pp. 240-245 ◽  
Author(s):  
Eva Singovszka ◽  
Natalia Junakova ◽  
Magdalena Balintova
Keyword(s):  
Heavy Metal ◽  
Particle Size ◽  
Grain Size ◽  
Fundamental Property ◽  
Water Reservoir ◽  
Precise Determination ◽  
Sediment Grain Size ◽  
Metal Contents ◽  
Effect Of Particle Size ◽  
Size Of Particles

Particle size is a fundamental property of any sediment, which can provide important information about its nature and provenance. The particle size distribution requires precise determination using a rapid and reliable method with a high resolution. Grain size is the essential factor influencing the heavy metal contents in sediment and is the most fundamental property of sediment particles, affecting their entrainment, transport and deposition. The aim of this paper is to present the results of the effect of particle size on heavy metal (Cu, Zn, Fe, Pb and As) distributions in sediments. Dependence between the distribution of metals in the examined profile of the sediments from Ruzin water reservoir on the different size of particles and depth is unambiguous for Cu, Zn and Fe with exception of Pb and As.

scholarly journals Speciation of metals in the fine fracion of solid waste from an excavated landfill

2017 ◽  
Author(s):  
Fabio Kaczala ◽  
Kaja Orupõld ◽  
Anna Augustsson ◽  
William Hogland
Keyword(s):  
Solid Waste ◽  
Solid Phase ◽  
Total Concentration ◽  
Fine Fraction ◽  
Residual Fraction ◽  
Bcr Sequential Extraction ◽  
Metal Contents ◽  
Exchangeable Fraction ◽  
Sequential Extraction Method ◽  
Potential Mobility

In this current study, speciation of metals in the fine fraction (<10 mm) of excavated solid waste from an Estonian landfill was performed in order to evaluate metal contents and their potential mobility and bioavailability. The fine fraction speciation was carried out following the BCR sequential extraction method for Pb, Cu and Cd and the exchangeable (F1), reducible (F2), oxidizable (F3) and residual (F4) fractions were determined. The results have shown that Pb was highly associated with the reducible (F2) and oxidizable (F3) fractions suggesting the potential mobility of such metal mainly when in contact with oxygen, despite the low association with the exchangeable fraction (F1). The metal Cu has shown also potential for mobility and bioavailabilty when in contact with oxygen since high associations with the oxidizable fraction (F3). On the other hand, Cd was mostly found associated with the residual fraction (F4) were observed raising low concerns regarding mobility and toxic effects in case of excavation. To conclude, studies addressed to understand not only the total concentration of metals in solid phase, but also the speciation and which form metals are bound, are very important in order to bring information on how to manage fine fraction from excavated waste both in terms of environmental impacts and also recovery/extraction.

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